Para.3 To highlight the impact of light pollution on stargazing,the entire population of Dulverton in Somerset is being asked to switch off their lights on Wednesday evening to show the contrast,as part of BBC Two's Stargazing Live.To highlight the impact of light pollution on stargazing, the entire population of Dulverton in Somerset is being asked to switch off their lights on Wednesday evening to show the contrast, as part of BBC Two's Stargazing Live. Para. 3